- verify 'dataserver' process is owned by 'sybase': ps -aef | egrep dataserver
- I'm assuming '/net/134.163.248.45' is some sort of network/nfs mounted filesystem; verify the read/write permissions of a) the local filesystem mount point and b) the remote filesystem
- what do you mean by 'system table ... backup' ? are you referring to the output files from bcp commands? does 'sybase' own said backup files? : ls -l <backup_file_name>
- as a simple test, can you successfully backup a small database (eg, model) to a different filesystem on your machine? if so, what does the OS show as the owner of said dump file? : ls -l <model_db_dump_file>